Patient interface for respiratory therapy

Patent metadata

Field	Value
Publication number	US-2017224943-A1
Application number	US-201515316287-A
Country	US
Kind code	A1
Filing date	Jun 19, 2015
Priority date	Jun 19, 2014
Publication date	Aug 10, 2017
Grant date	—

Abstract

Apparatus to permit a delivery of a flow of breathable gas to a patient's airways. In one version, a coupler extension may include a seat portion to permit use of a mask with a nasal cannula. In some versions, the coupler extension is configured to conduct the flow of gas to prongs of a nasal cannula. The seat portion can receive and seal with a cushion of a respiratory mask and may have a sealing bevel to promote sealing between the cushion of the respiratory mask and a facial contact surface of a user. In some versions, a conduit adapted to communicate a flow of gas may comprise a slit valve formed by a portion of the wall material of the conduit. In some versions, a nasal interface may include naris pillows to seal with and conduct a flow of breathable gas into a nares of a user. Each naris pillow may include a nasal projection to conduct a further flow of gas. The nasal projection may extend within the naris beyond the seal of the naris pillow.

First claim

1 . Apparatus for delivery of a flow of breathable gas to a patient's airways comprising:
a nasal cannula including a set of projections, each projection configured to conduct a flow of gas into a naris of the patient; and a coupler extension configured to conduct the flow of gas to the set of projections, the coupler extension configured to couple with one or more gas supply lines of a breathable gas source; wherein the coupler extension comprises a seat portion, the seat portion configured to receive and seal with a cushion of a respiratory mask, the seat portion having a sealing bevel to promote sealing between the cushion of the respiratory mask and a facial contact surface of a user.

2 . The apparatus of claim 1 wherein the coupler extension comprises a plurality of seat portions.

3 . The apparatus of claim 2 wherein each seat portion comprises a triangular profile.

4 . The apparatus of claim 2 wherein each seat portion comprises a lentil profile.

5 . The apparatus of claim 2 wherein each seat portion comprises a first flow passage, and/or a second flow passage.

6 . (canceled)

7 . The apparatus of claim 5 wherein each flow passage of a seat portion comprises a round gas flow passage.

8 . The apparatus of claim 5 wherein each flow passage of a seat portion comprises a rectangular gas flow passage.

9 . The apparatus of claim 1 wherein the set of projections comprises first and second nasal prongs.

10 . The apparatus of claim 1 further comprising a seat ridge.

11 . Apparatus for delivery of a flow of breathable gas to a patient's airways with a nasal cannula having a set of projections, each projection configured to conduct a flow of gas into a naris of a user, the apparatus comprising:
a coupler extension configured to couple with one or more gas supply lines of a breathable gas source, the coupler extension comprising a seat portion, the seat portion configured to receive and seal with a cushion of a respiratory mask, the seat portion having a sealing bevel to promote sealing between the cushion of the respiratory mask and a facial contact surface of a user.

12 . The apparatus of claim 11 wherein the seat portion comprises a lumen groove adapted for removably receiving a gas supply line of a breathable gas source.

13 . The apparatus of claim 11 wherein the seat portion comprises a triangular profile.

14 . The apparatus of claim 11 wherein the seat portion comprises a lentil profile.

15 . The apparatus of claim 11 further comprising a seat ridge.

16 - 55 . (canceled)

Assignees

• Resmed Ltd

Inventors

• Creusot David
• Holley Liam
• Klasek Paul Jan
• Malouf Gordon Joseph
• Schindhelm Klaus Henry
• Yang Quangang

Classifications

• A61M16/107

  in the inspiratory path · CPC title

• A61M2202/0208

  Oxygen · CPC title

• A61M16/0066

  Blowers or centrifugal pumps · CPC title

• A61M2016/003

  with a flowmeter · CPC title

• A61M2016/0027

  pressure meter · CPC title